Head of Rémy Cointreau's Cognac Brand Steps Down

Christian Liabastre to Serve as Interim Manager

PARIS—Rémy Cointreau SA on Thursday faced the second departure of a senior executive in a month, adding further uncertainty to the future of the group already hit hard by an abrupt decline in sales in China.

The departure of Patrick Piana, the head of the key Rémy Martin brand, comes as the Paris-based drinks group is trying to stem the impact China's anticorruption campaign has been having on its sales.